Biological characteristics of breast cancer at the primary tumour and the involved lymph nodes

Authors

  • E. Dikicioglu,

    1. Departments of Pathology,1and Medical Oncology,2Adnan Menderes University, Medical School, Aydin, Turkey
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  • 1 S. Barutca,

    Corresponding author
    1. Departments of Pathology,1and Medical Oncology,2Adnan Menderes University, Medical School, Aydin, Turkey
      *Dr Sabri Barutca, Adnan Menderes Universitesi, Tip Fakultesi, Medikal Onkoloji B.D., 09100 Aydin, Turkey Fax: + 90 256 214 64 95
      Email: sbarutca@yahoo.com
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  • 2 N. Meydan,

    1. Departments of Pathology,1and Medical Oncology,2Adnan Menderes University, Medical School, Aydin, Turkey
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  • and 2 I. Meteoglu 1

    1. Departments of Pathology,1and Medical Oncology,2Adnan Menderes University, Medical School, Aydin, Turkey
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*Dr Sabri Barutca, Adnan Menderes Universitesi, Tip Fakultesi, Medikal Onkoloji B.D., 09100 Aydin, Turkey Fax: + 90 256 214 64 95
Email: sbarutca@yahoo.com

Summary

Diminished oestrogen receptor (ER) expression in the involved axillary lymph nodes (ALN) in breast cancer compared with the primary tumour has been reported in previous studies. We have assessed a wider spectrum of tumour markers (ER, progesterone receptor (PgR), p53, Ki-67 and HER-2/neu) and compared extent and staining intensities at the primary tumour and the involved ALN on specimens of 22 cases with invasive ductal breast cancer. At the involved ALN, both the quantity of positive staining cells and the staining intensities for ER and PgR were decreased (p < 0.001 and p = 0.003, respectively). In contrast, the quantity of positive staining cells (p < 0.004) and the staining intensities for Ki-67 were increased. The differences for HER-2/neu and p53 staining at both sites were insignificant. The immunohistochemical staining properties of both the primary tumour and the ALN metastases showed no correlation with the number of involved ALN (p > 0.05). This study suggested that ALN metastasis might indicate a more unfavourable expression pattern of ER, PgR and Ki-67 in invasive ductal breast cancer.

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